P-Asserted Identity (Pai; Route Header In Sip Packet - Mitel 6867i Administrator's Manual

• Checks to see if the incoming call is from a registered proxy server.
• If the call is forwarded via a registered proxy server, then the message has already been
verified and authenticated by the server. The caller is part of the Trust Network. The IP
phone UI displays the caller information contained in the PAI header.
• If the call is not forwarded via a registered proxy server - and therefore is not a "Trusted
Entity" - the IP phone UI does not display any trust information contained in the PAI header.
The phones provide the ability for the Administrator to enable or disable the display of
P-Asserted Identity (PAI) information on the phone using the following parameter in the
configuration files:
• sip pai
ENABLING/DISABLING P-ASSERTED IDENTITY (PAI)
Use the following procedure to enable/disable PAI.
CONFIGURATION FILES
For the specific parameter you can set in the configuration files, see Appendix A, the section,

"P-Asserted Identity (PAI)"

CONFIGURABLE ROUTE HEADER IN SIP PACKET
The IP Phones support the following parameter:
• sip remove route
This parameter enables or disables the addition of the Route header in a SIP packet. Enable
this parameter for outbound proxies that do not support Route headers.
Note: When enabled this will break all support for SIP routing, so if some other device
in the network attempts to add itself to the route it will fail.
ENABLING/DISABLING THE ROUTE HEADER IN THE SIP PACKET
Use the following procedure to enable/disable the addition of the Route header in the SIP
packet.
CONFIGURATION FILES
For the specific parameter you can set in the configuration files, see Appendix A, the section,

"Route Header in SIP Packet"

on .
page A-283
on .
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Advanced Operational Features
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